President Donald Trump said Monday that he has been taking anti-malaria drug hydroxychloroquine for over a week to prevent coronavirus infection even though it is not yet a proven treatment.

The president said he consulted with the White House doctor about taking the drug, but it was not explicitly recommended for him since he has not tested positive for the virus.

Medical experts and media figures were quick to raise concerns about Trump's embrace of the drug, expressing alarm that it may encourage others to do the same despite potentially deadly side effects.